Spraying mechanism



H. F. SMITH.

SPRAYING MECHANISM.

APPLICATION FILED ocT.27,1919.

Patented Nov. 22, 1921.

UNITED PATENT oFFlcE.

HARRY F. SMITH, 0F DAYTON', OHIO, lliSSllCviNCIt, BY MESNE ASSIGNMENTS, '1'0 THE GAS RESEARCH COMPANY, OIF DAYTON, OHIO, A CORPORATION OF OHIO.

SPRA'YING- MECHANISM.

`'Specification of Letters Patent. Y Patented NOV. 22, 1921.

Substitute for application Serial No. 195,346, filed October 8, 1917. This application :illed October 27.

1919. Serial No. 333,504.

To all whom t may concern.' v

Be it known that l, HA nur F. @MITI-1 a citizen of the United States of America, residing at Dayton, county of Montgomery, State of Ohio, have invented certain new and useful improvements in Spraying Mechanism, of which the following is a full, clear,- and exact description.

This invention relates to fluid distributing apparatus, and more particularly to fluid distributing apparatus comprising spraying mechanism, especially adapted for cleanlng filters and the like, and automatic controls therefor. e

lt has been found heretofore that inrusing lters the material being separated tends to accumulate on the surface and in the body of the filter pad, and thus clog this pad. in such cases, it is often possible to spray the pad with some suitable fiuid, adapted to remove the accumulation, and restore it to its normal efficiency. Especially is this true where a gas is being filtered to remove solid or liquid particles therefrom. It is found at times, however, that even though the impurities are removed, the fluid of the spray itself will clog the filter pad. In order to obviate this, means must be provided for interrupt ing the flow of spray, after a suitable interval, so that all cleansing fluid may drain from the pads. These operations have been performed, heretofore, entirely by manually controlled apparatus. l

-The principal object of the invention is to provide a fluid distributing apparatus constructed tol automatically spray a filter pad when such pad becomes unduly clogged, and, in order to prevent clogging of the filter pad from the sprayed liquid itself, to automatically interruptl such spraying op.- eration after it has continued for a suitable length of time. And further, to so actuate this interrupting mechanism that if the filter pad is still clogged after such interruption, as will be the case if all the impurities, have not been removed, spraying action will be resumed. j

Other objects and advantages will be apparent from the description set out below..

For convenience in describing the present invention it will be explained with reference to filter cleaning mechanism of the type referred to, making use for purposes of descriptionA of the apparatus illustrated in the accompanying drawing, which is shown partly in section and partly in elevation to more clearly disclose the mechanical details thereof.

In the drawing, l is a gas main leading from the producer or any other source of gas or huid to be purified. ,Extending transversely across this main is a partition 2.

Extending through thevside of the pipe -1, and upon opposite sides of the partition 2,

. are two ports 3 and f1. Attached to the pipe 1, so that its ports 5 and 6 register with the ports 3 and f1, is a filter drum or housing 7.

The drum 7 has a partition 8 therein, adapted to aline with the partition 2, and thus serve as a continuation thereof when the drum is in assembled position. The partition .84 extends transversely across the drum,

dividing it into two chambers 9 and 10, and

is adapted to carry thereon the filter pad or 4 member 11. From the above description, itV

is obvious that any gas fiowingthrough vthe 3 and 5, through the `filter pad 11, and then v pipe 1 will pass upwardly through the ports downwardly through the ports 6 and A1, into the delivery end ofthe pipe 1. This type of purifying apparatus and the method of operatl'ng it are more fully described in my already issued Patents Nos. 1,099,773, Jun-e 9,

1914 and 1,140,198, May 18, 191.5.

Suitably located vnear the filter drumis a tank 12, having an inlet pipe 13, leading thereto for supplying water or any other desired fluid. This inlet pipe is controlled by a valve 14,- adjustably connected to the rod of a fioat 15. By properly adjusting the valve 14, any desired level of liquid in the tank 12 may be secured.

Leading into the end 9 of the `drum 7 is the delivery pipe 16 of an injector 17. Attached tothe inner end of the pipe 16 is a spray nozzle 18, so positioned that when liquidis passed therethrough, it .will be sprayed over the pad 11 to remove impurities therefrom. Opening into the injector is a steam supply pipe 19, and leading from the side of the injector is a pipe 20, which eX- tends into the liquid in the tank 12. Any steam passed through the pipe 19 into the injector 17 will draw water from the tank 12, which, mixing with the steam in the pipe 16, will pass out through the nozzle 18 in the form of a hot spray.

Located in the pipe 19 is a valve 21, th operating handle 22 of which is operatively connected to the rod 23 of the float 24. Posithe tank 12 raises the float 24, the stop 25' will first be brought into contact with the operating handle 22, and will move that handle so that when high level of Water in the tank is reached, it will have opened the valve 21 to thus provide unobstructed flow of steam in the pipe 19 therethrough. And

conversely, when the supply of Water in the tank is falling, as Where the injector is operating to remove Water through the pipe 20, the stop 26 will be brought into contact with the handle 22, and upon continued down- Ward movement of the float, will, when a sufficiently low level of water in the tank is reached, have so moved that handle as to bring about a complete closing movement of the valve 21.

Leading from the end 9 of the drum 7 is a pipe 27, the opposite end of which opens into one side of a diaphragm regulator 28. The diaphragm 29 of the regulator 28 has attached thereto a rod 30, which is operatively connected to a valve 3l, located in the steam supplying pipe 19 and adapted to control the passage of steam therethrough. Surrounding the stem 30, within the diaphragm regulator 28 is a spring 32. Any pressure in the end 9 of the filter drum 7, that is, any pressure in advance of the filter pad, will act through the pipe 27 upon the upper side of the diaphragm 29, and will tend to deform that diaphragm to actuate the valve 31. The valve 31 is so connected to the operating stem 30 that under normalconditions of pressure in 9, it will be closed, and thus prevent the flow of steam through the pipe 19. The tension of the spring 32 can be varied as desired, to thus alter the resistance of the diaphragm to deformation. In other Words, if the normal pressure in 9, when the filter is in operation, is four pounds, the spring 32 can be so tensioned that it will require a pressure in excess of four pounds to cause any deformation of the diaphragm 29 tending to open the valve 31. When set for any definite pressure in 9, however, any pressure in excess of such predetermined pressure, Will immediately act upon the diaphragm 29 to open the va ve 31. When the valve 31 is opened, presuming that the valve 21 is also opened, the steam Will immediately pass through the pipe 19 into the injector 17, and as a result, a spray of hot water will be directed against the filter pad 11. And as stated above, since the valve 21 is held open vso long as the level of water in the tank 12 remains above a certain height, it is evident that opening of the valve 31 will immedi- -atel result in such a spraying action as descri ed, which action will continue until the level of Watenin the tank falls suficiently to brin about a closing of the valve 21. Since t e lloW of Water into the tank 12 through the pipefis controlled'by the float operated valve 14:, .any lowering of water devel in the tank 12 will immediately result 1`n an inflow of fresh Water, to take. the place thereof. The valve 14 is so proportioned, however, that the amount of Water iowing into the tank is not sufficient to compensate for the total amount of Water drawn from the tank through the injector. .'In other Lyvords, during operation Water is drawn from the tank faster than it flows thereinto. After a substantial length of operation, it is evident, therefore, that regardless of the pressure in 9the level of Water in the tank 12 will have fallen to a sufiiciently low, predetermined level, to bring about a closing movement of the valve 21, to thus automatically and arbitrarily interrupt the flow of steam through the pipe 19, to cause a cessation of the spraying operation. While the valve 21 is closed, the supply of water in the tank 12 is being replenished, and when this supply has reached a predetermined high level, the valve 21 will be again opened. If the abnormal pressure in 9 still exists, as would be true if the pad had not been properly cleansed, the valve 31 will be still held open by the diaphragm 29, and uponopening of the valve 21, spraying operation'will be immediately resumed. If, however, the pad, after this first spraying, has been suiiiciently cleansed to permit of the pressure in 9 returning to normal, then the valve'31 will be in closed position, and even though the valve 21 is opened, no spraying operation will take place. So long as the level of water in the tank 12 remains at the predetermined high level, however, the valve 21 will be held Wide open, so that immediately upon proper actuation of the valve 31, spraying operation will be resumed.

If for any reason, even though the impurities have been removed from the pad by the spraying action, the spraying fluid itself tends to clog that pad and thus keep an abnormal pressure built up in 9, it is evident that in the absence of some mechanism for arbitrarily interrupting the spraying action, it would continue indefinitely.

But, by providing such interrupting mechanism, the sprayingliquid can easily drain from the pad before spraying action will be resumed. It is evident, therefore, that if an abnormal pressure continues to exist in 9, as would be the case where the neemt? pad has not been properly cleansed, spraying action will be continued intermittently until such im urities are removed; but if such abnorma pressure continues to exist only because of the spraying liquid itself clogging the pad, such interruption will permit of the draining olf of such clogging liquid, with the consequent dissipation of the excessive pressure.

While I have shown and described the above mechanism as especially adapted for use in the uriication of tar' containing gases, it is o vious that its applicability is by no means limited to such specific use, but that it may be just as readily used for cleansing filter pads generally, so long as` the impurity clogging those pads is one thatV may be removed by spraying. And further, it is obvious that many changes in mechanical details may be adopted, all coming withf in the scope of my invention. For a proper definition of the scope of my invention, therefore, reference should be had to the appended claims.

What l claim as new and desire to secure by Letters Patent is:

l. In a device of the character described, a distributing pipe; means for supplying Huid to said pipe; pressure operated means for controlling the said suppl ing means, constructed to maintain sai supplying means in operative position during the continuance of predetermined pressure conditions at the place of delivery of the distributed luid; and other means constructed to interrupt, at predetermined intervals, the l supply of luid to said lluid supplying ipe. 2. In a device of the character described,

a duid containing tank; a distributing pipe leading therefrom; an ejectorin said pipe; a valve controlling the supply of pressure fluid to said ejector, pressure actuated mechanism for operatingv said valve; ai second valve in advance of said controlling valve, and independent means for operating said valve after the ejector has functioned for a predetermined period, to'interrupt the supply of pressure fluid to the ejector.

3. In a device of the character described, a tank for receiving liquid to be distributed, a fluid supply pipe opening into said tank, means for admitting fluid through said supply pipe so long as the fluid in the tank is below a predetermined level; a distributing ypipe leading from the tank; an ejector in said distributing pipe, a .pressure-fluid supply pipe connected to said ejector and to a source of supply of pressure-fluid; a pressure operated valve in said pressure-Huid supply pipe, constructed to be held in open position during the continuance of predetermined pressure conditions at the place of delivery of the distributed fluid; a second valve in the pressure-Huid supply pipe, and operating means therefor responsive to the fluid level within the tank, said means bein so constructed as to open said last name valve when the lluid in the tank rises to a predetermined level and to close it when the fluid in the tank falls to ay predetermined level.

4. In a fluid distributing device, a distributing pipe; means for supplying duid to said pipe; pressure actuated means for controlling said supplying means; and means constructed to operate independently of the actuating pressure tor automatically interrupting the supply of fluid after a predetermined interval. y

5. A spraying device comprising a spray nozzle, means or supplying fluid to said spray nozzle, means actuated by the pressure surrounding the spray nozzle for controlling the fluid supplying means, and means for automatically interrupting the supply of fluid to said nozzle after a substantial interval. Y

6. In a duid distributing device, a distributing pipe means for supplying duid to said pipe; pressure actuated means for controlling said supplying means; and means operable independently of the pressure governing said rst named means for interrupting the supply of duid at predetermined intervals.

7. In a device tor supplying Huid to a receptacle; a fluid distributing pipe leading into said receptacle; means for supplying fluid to said pipe; means responsive to pressures Within the receptacle for actuating the supplying means; and means independent fluid to said pipe; pressure responsive means for actuating said supplying means, said supplying means being so constructed as to function so long as pressure within the receptacle exceeds a predetermined pressure; and means independent of the pressure actuated means for interrupting the unctionin of said supplying means at predetermined intervals.

9. In a device for supplying fluid to a receptacle; a fluid distributing device leading into said receptacle; means for supplying fluid to said pipe, pressure operated means for controlling the said supplying means, constructed to maintain said supplying means in operative position during the continuance of predetermined pressure conditions in said receptacle; and other means, independent of said ressure operated means, constructed to nterrupt the supply 4of fluid at predetermined intervals.

10. A device for cleaning lters and the like, comprising a filter drum, a filter pad therein; a spray nozzle in the drum, means for supplying a cleaning fluld to sa1d no zzle; and means actuated bv the pressure 1n the drumin advance of tlle filter pad for controlling the supply pf cleaning fluid to said nozzle.

11. A device for cleaning-filters-and the like, comprising a filter drum, a filter pad therein; a spray nozzle in the drum, means for supplying a cleaning fluid to said nozzle; pressure operated means for controlling the supply of cleaning fluid; and means for automatically interrupting the. supply of fluid after a predetermined period.

12. A device for spraying filters and the like, comprising a filter drum, a filter pad therein; spraying mechanism in the drum, means for supplying fluid to said spraying mechanism; means actuated by the pressure in the drum in advance of the filter pad for controlling the suppl of fluid to said spraying mechanism; an means for automat1- cally interrupting the supply of flu1d after a substantial interval.

13. A device for cleaning'filters and the like, comprising a filter drum, a filter pad therein; and.' independent means brought into operation When the filter .pad has reached a certain predetermined ineffectiveness of operation for restoring the said pad to its normal filtering condition.

14. A device for cleaning filters and the like, comprising a filter drum, a filter pad therein; and means independent of the fluid passing through the filter pad for automatically cleaning said pad when it reaches a predetermined ineffectiveness of operation.

15. A device for cleaning filters and the like, comprising a filter drum, a vfilter pad therein; and fluid sup lying means for intermittently cleaning t e filter pad Without reversing the direction of flow of the fluid passing therethrough.

16. A device for cleaning filters and the like, comprising a filter drum, a filter kpad therein; and automatic means for intermittently treating the filter pad with a cleaning fluid Without reversing the direction of flow of the fluid passing therethrough.

17. A device for cleaning filters and the like, comprising a filter member; and means actuated in accordance with the resistance to flow through the filter member for spraying a cleaning material thereon.

18. A device for cleaning filters and the like, comprising a filter member; and means responsive to the pressure in advance of said filter member for spraying a cleaning material thereon.

19. A device for cleaning filters. and the like, comprising a filter member; and means adapted to spray a cleaning material upon said filter member when the pressure in advance thereof exceeds a predetermined pressure.

20. A device for cleaning filters and the like, comprising a filter member means adapted to spray a cleaning material upon said filter member, said means tending to function so long as the pressure in advance of t-he filter member exceeds a predetermined pressure* and means for interruptingt the functionm of said-,spraying means a er a predetermmed interval.

21. A device for cleaning filters and the like, comprising a filter member; means adapted to spray a cleaning material upon said filter member, said means being adapted to funtion when the pressure in advance of the filter member exceeds a predetermined pressure, and tending to function so long as such predetermined pressure is exceeded; and means for interrupting the functioning of said spraying mchanism after a predetermined interval, irrespective of the pressure existent in advance of the filter member.

22. A device for cleaning filters and the like, comprising a filter member; means adapted' to spray a cleaning material upon said filter member, said 4means being adapted to function when the pressure in advance of the lter member exceeds a predetermined pressure, and tending to function so long as such predetermined pressure is exceeded; and means for interrupting the ,functioning of said spraying mechanism at predetermined intervals throughout such time as the pressure in advance of the filter member exceeds the predetermined pressure.

23. A device for cleaning filters and the like, comprising a filter member; spraying mechanism for spraying a cleaning fluid upon said filter member; pressure controlled means for supplying a cleaning fluid to said spraying mechanism from a containing tank; and means for interrupting the supply of cleaning fluid to the spraying mechanism when the level of the cleaning fluid in the tank falls to a predetermined level.

24. A device for cleaning filters and the like, comprising a drum containing a filter member therein; a spray nozzle in the drum adapted for s raying a cleaning fluid upon the filter mem er; means for feeding a cleaning fluid from a containing tank to the spray nozzle, said means including an injector;

means responsive to the pressure in advance of the filter member for actuating said injector; and separate means for interrupting the functioning of said injector when the level of the fluid in the tank falls to a definite level.

In testimony whereof I affix my signature.

HARRY F. SMITH.

Witnesses THoMAs CUREroN, ALVINA LEHMAN. 

